Does this muffler sound good? and is it very easy/cheap to install?
Absolute garbage, don't waste your money. And for what it's worth. the muffler has no bearing on emissions testing. You may have had to remove the glasspack, for noise level violation issues, but not for emissions.
If you must get an aftermarket exhaust ( and none will sound good on a V6 ) stick with names you've heard of.